The study depended, in part, on the ACLU's list of legislation.

I found the ACLU's list of "Anti-LGBTQ Bills" from the 2020 session.

It has 52 bills in its list, all which were active in the time period of the study. (The study used data from 40 bills)

Using this list, it would move GA, IA, OK, SC, ID, IN, WA, and WV from states w/o "Anti-LGBTQ Bills" to those with. And it would move CA from with to w/o.

That seems like it could shift things around quite a bit.

https://www.aclu.org/past-legislation-affecting-lgbt-rights-across-country-2020

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edit: removed ID added IN